Thursday, 19 March 2020

MECHANICAL PAN CIRCULATOR


Mechanical circulators are installed in a vacuum pan to reduce the color of the sugar, along with an increase in the production of pans to reduce boiling time. Due to the increase in heat transfer coefficient, the accumulation time is reduced by up to 30%, thereby increasing the unit's production capacity.


The mechanical construction of the circulator consists of a motor driving gearbox that reduces the speed required for the connected shafts and impellers. The sealing is arranged between the circular and the pan to maintain the vacuum. This seal may be of a packed gland type. Variable speed direct torque control drive (VFD) is used to operate the motor.

The drive is programmed to run as fast as possible while keeping the motor within the allowable power and torque capabilities. If the masculine viscosity increases, the drive senses an increase in the required torque and slows the motor from overloading any component. If for muscular cooling, the drive travels when the muscovite viscosity increases at the lowest speed of driving.

Technical Superiority:

         It is commonly used in the sugar industry to enhance the efficiency of the                             crystallization process.
         A, B and C can be used for massaiites.
         Improves heat transfer efficiency by imposing higher rates of heat transfer and                     evaporation.
         Avoid loss of head and less deposition on the tubes due to Friction of    
           circulating crystals.
         Uniform and Compatible crystal formation.
        colour Less  in the sugar and reduced risk of sugar losses by local overheating                     with low risk of smelting of crystals.
         Possibility of feeding the pan with syrup and molasses tank .
         Opportunity to use low steam pressure for heating.
         Centrifuge washing water use less .
         The use of low pressure steam can result in reduced steam consumption.

Key Design Features:

           Process design basis adopted over the Traditional thumb rule approach of                             pan tonnage based motor rating selection.
           Saving in time up to 30% for the strike.
           Maximum heat reached by the massecuite substantially lower.
           Rugged heavy duty design.
           Mechanical arrangement to ease maintenance activity.
           Options of gearbox types – planetary, inline helical, bevel helical     arrangements.
           Genuine material specifications with material test certificates.

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